Prerequisite: Proficiency in Arcana or Martial Weapons

You have honed your skills to track, combat, and neutralize magical threats, granting you specialized abilities to outwit and overpower spellcasters. Whether driven by vengeance, duty, or sheer necessity, you are a relentless adversary to those who wield magic recklessly.

Benefits

• Mage Slayer Expertise: When a creature within 5 feet of you casts a spell, you can use your reaction to make a melee weapon attack against them. If the attack hits, the creature must succeed on a Concentration check (DC = 10 + the spell’s level) or the spell fails.
• Spell Sense: You gain advantage on saving throws against spells cast by creatures you can see within 30 feet. Additionally, you can use your reaction to identify a spell being cast within this range, provided you can see the caster.
• Arcane Disruption: When you deal damage to a creature concentrating on a spell, they have disadvantage on the Concentration saving throw to maintain the spell.
• Mark the Witch: As a bonus action, you can designate a creature within 60 feet of you that you can see as your target. For 1 minute, you gain the following benefits against the marked creature:
• Your weapon attacks against them deal an additional 1d6 damage of the weapon’s type.
• If the creature casts a spell, they take psychic damage equal to your proficiency bonus.
  You can use this feature once per short or long rest.
• Arcane Adaptation: Choose one of the following skill-based benefits:
• Arcane Knowledge: You gain proficiency in Arcana. If you already have proficiency, you gain expertise, doubling your proficiency bonus for checks made with this skill.
• Counter-Strike Training: You gain proficiency in Athletics or Acrobatics (your choice), and you can move up to 10 feet as part of a reaction when a spellcaster you can see targets you with a spell.

Optional Rule for Dungeon Masters

Characters with this feat may gain access to unique, magical tools designed to hunt spellcasters, such as anti-magic bolts, scrolls of counterspell, or talismans that grant resistance to specific schools of magic.